Home / 4,781.36-7,139.85-3,905.61

Finding the Fourth Proportional to 4,781.36, 7,139.85 and 3,905.61

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Solution

The fourth proportional to 4,781.36, 7,139.85 and 3,905.61 is: 5,832.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,781.36 : 7,139.85 = 3,905.61 : x
  2. Step 2: Convert to fraction form
    4,781.36/7,139.85 = 3,905.61/x
  3. Step 3: Cross multiply
    4,781.36x = 7,139.85 × 3,905.61
  4. Step 4: Simplify right side
    4,781.36x = 27,885,482.53
  5. Step 5: Solve for x
    x = 27,885,482.53/4,781.36
  6. Step 6: Final answer
    x = 5,832.12

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.